Hart hadn't played since Sunday while dealing with back and forearm injuries. He opened the spring 2 for 5 in his first two games but has gone hitless in 16 at-bats since.
"You can tell he knows it feels better just by his attitude and the way he's carrying himself around," manager Kirk Gibson said.
Arroyo is still questionable to be ready by the beginning of the regular season, but Friday's news is a step in the right direction. He has yet to spend time on the disabled list in his 14-year career.
Ramirez is doing well in his bid for a rotation spot, posting a 1.42 ERA and 10:2 K:BB ratio in 12 2/3 innings. He should open the season in the rotation but may need to pitch well to keep his slot as other pitchers get healthy.
Morales gave up just one hit in the first inning and one hit in the third, but one was a home run and the other was a triple, and both ended up scoring. He owns a 3.97 ERA and 13:2 K:BB ratio in 11 1/3 innings.
Hernandez bounced back nicely after allowing four earned runs in his last game. He owns a 4.32 ERA and 7:3 K:BB ratio in 8 1/3 innings.
"Everything was good. I was a little anxious, a little nervous. My mechanics are definitely rusty," Latos said. "I can't complain for the first time out facing live hitters. I was a little amped up. All in all, I'm satisfied. There are a couple of tweaks and adjustments I need to make."
Latos should see game action next week and could still open the season in the rotation as the team's fifth starter, provided he doesn't suffer a setback with his return from October elbow surgery.
Cueto was lit up for six earned runs in his second appearance of spring but has allowed just one run over nine innings in his two games since. He has an impressive 13:2 K:BB ratio as well as a 4.61 ERA in 13 2/3 innings.
Ross has been a key piece in the Texas bullpen the last two seasons but is competing for a spot in the rotation this spring, though he could fill a bullpen role if he doesn't make the rotation. He owns a 2.08 ERA and 2:2 K:BB ratio though 8 2/3 innings this spring.
Scheppers is competing for a spot in the rotation, but he's also a candidate to close if he isn't named one of the team's five starting pitchers. He owns a 3.12 ERA and 8:4 K:BB ratio in 8 2/3 innings this spring.
Scott Boras, the agent for free-agent shortstop
The purpose of waiting will be to remove the necessity to forfeit a draft pick by signing either player, as teams are required to do after both players declined the qualifying offers presented to them at the beginning of the offseason.
"The system they've been dealt has basically prevented them from free agency," Boras told ESPN.com. "They want to make sure about their next step, whatever that will be. It means either signing a long-term contract now -- and we're still taking offers on those -- or a number of other prospects that could occur after the season starts or in June, after the draft happens. Like any players, they want to play baseball. But they're also looking at the long-term aspect of their careers. This system has placed them not in free agency, but it's placed them in a jail."
Another player who declined a qualifying offer, Braves pitcher Ervin Santana, couldn't find a desirable multiyear deal this offseason and finally inked a deal equal to his qualifying offer this week.